TitleTelephone Pole InsulatorObject TypeObjectDatec.1930DescriptionGlass telephone pole insulator.
Makers MarkAGM 22-5Provenance and SignifcanceUntil about the 1940's, wires that carried signals for telephones and telegrams were insulated with glass.
The glass insulator was attached to the pole, and the live wire ran across the grooves in the glass, and on to the next insulator.